Results 191 to 200 of about 15,580 (224)
Some of the next articles are maybe not open access.
Interleaved Orthogonal Frequency Division Multiplexing (IOFDM) System
IEEE Transactions on Signal Processing, 2004In orthogonal frequency division multiplexing (OFDM) systems, for every block of K data samples, an overhead of L samples of cyclic prefix (CP) or zero padding (ZP) is added to combat frequency selective channels. The code rate, which is defined as the ratio K/(K+L), is a measure of the efficiency of transmitting user information.
Prasad, VGS, Hari, KVS
openaire +1 more source
Orthogonal frequency division multiplexing with generalized index modulation
2014 IEEE Global Communications Conference, 2014Recently, an Orthogonal Frequency Division Multiplexing (OFDM) with index modulation (OFDM-IM) [1] was proposed. By selecting a fixed number of subcarriers as active subcarriers to carry constellation symbols, the indices of these active subcarriers may carry additional bits of information. In this paper, a generalization of OFDM-IM, named as OFDM with
Rui Fan, Ya Jun Yu, Yong Liang Guan 0001
openaire +1 more source
Fractionally Spaced Orthogonal Frequency Division Multiplexing Systems
2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007Frequency domain equalizers using cyclic prefix have been often deployed due to their implementation efficiency and attractive performance. The design of such schemes with an L-fold fractionally spaced receiver has been recently proposed. We consider here the more generic setup where the sampler operates at L/M times the symbol rate where L > M > 1 are
Chen Meng, Jamal Tuqan
openaire +1 more source
Orthogonal Frequency Division Multiplexing Modelling
2022This work is motivated by the need to understand the performance of Orthogonal Frequency Division Multiplexing (OFDM) and Filterbank Multicarrier (FBMC). Multicarrier techniques are widely being considered for the development of the telecommunication systems such as the Long Term Evolution (LTE) networks, 5th Generation (5G) and beyond.
openaire +1 more source
Fairness in orthogonal frequency-division multiplexing optical networks
Journal of High Speed Networks, 2014Orthogonal frequency-division multiplexing (OFDM) optical networks allow multiple subcarriers to be allocated so that both subwavelength and superwavelength traffic can be accommodated. The success of OFDM is based on routing and spectrum allocation, and fairness in this allocation is an important factor in guaranteeing customer satisfaction.
openaire +1 more source
Orthogonal Frequency Division Multiplex (OFDM)
2004Almost from the beginning of the electrical transmission of messages about 100 years ago, single-carrier methods have been used for transmitting information. The message to be transmitted is impressed on a sinusoidal carrier by applying analog amplitude, frequency or phase modulation techniques.
openaire +1 more source
Orthogonal Frequency Division Multiplexing for IoT
2021Arvind Kumar, Rajoo Pandey
openaire +1 more source
Orthogonal Chirp-Frequency Division Multiplexing
IEEE Transactions on CommunicationsTúlio F. Moreira +3 more
openaire +1 more source
Orthogonal frequency division multiplexing for high-speed optical transmission
Optics Express, 2006Ivan B Djordjevic
exaly